The present invention provides a bump shape measuring apparatus comprising
an illumination optical system which illuminates bumps arranged on a
board with illumination light of a low tilt angle to a surface of the
board; a detection optical system where reflected light from the bumps is
condensed for detection of image signals of the bumps by a high tilt
angle to the surface of the board; an image processing unit where an
outline of the tip and the base of each of the bumps is calculated based
on the image signals of each of the bumps, and geometric characteristics
including at least a position and height of each of the bumps are
calculated based on the outline of the tip and the base of each of the
bumps; and a main control unit where information on the calculated
geometric characteristics of the bumps is displayed on a display unit.